5. Lily took a survey of 80 students in 7th grade and 150 students in 8th
grade. She found that 80% of the 7th
graders like country music, while
only 60% of the 8th graders like it.
Which grade has more students who
like country music? Explain.

correct choice is b

step-by-step explanation:

when you calculate the average rate of change of a function, you are finding the slope of the secant line between the two points. for the function the average rate of change from point to point can be calculated as

to find the average rate of change from day 2 to day 10, note that at day 2, 8 houses were sold, so a(2,8) and at day 10, 2 houses were sold, so b(10,2). thus,

1st part is 64,000,000

2nd part 500,000

step-by-step explanation:

a

step-by-step explanation:

the denominator cannot be the same as one of the factors.

8 denominator times 2 denominator = 16

and 7 numerator time 11 = 77

77/16= 77/16 ( they cannot be further simplified)